{"id":"CVE-2023-54280","title":"cifs: fix potential race when tree connecting ipc","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix potential race when tree connecting ipc\n\nProtect access of TCP_Server_Info::hostname when building the ipc tree\nname as it might get freed in cifsd thread and…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e < 536ec71ba060a02fabe8e22cecb82fe7b3a8708b","Linux >= c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e < 553476df55a111e6a66ad9155256aec0ec1b7ad0","Linux >= c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e < ee20d7c6100752eaf2409d783f4f1449c29ea33d","Linux 81d583baa5f1abd73c755ce1992929debd20b687","Linux >= 5.15.81 < 5.16","Linux 5.16"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-15T21:39:59.690437Z"},"published":"2025-12-30","updated":"2026-10-15","sourceUpdated":"2026-10-15T21:41:43.877Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-54280","references":[{"url":"https://git.kernel.org/stable/c/536ec71ba060a02fabe8e22cecb82fe7b3a8708b"},{"url":"https://git.kernel.org/stable/c/553476df55a111e6a66ad9155256aec0ec1b7ad0"},{"url":"https://git.kernel.org/stable/c/ee20d7c6100752eaf2409d783f4f1449c29ea33d"}],"tags":["cve.org"],"epss":0.00515,"epssPercentile":0.42424,"ingestedAt":"2026-10-15T22:48:25.437Z","slug":"CVE-2023-54280","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix potential race when tree connecting ipc\n\nProtect access of TCP_Server_Info::hostname when building the ipc tree\nname as it might get freed in cifsd thread and thus causing an\nuse-after-free bug in __tree_connect_dfs_target().  Also, while at it,\nupdate status of IPC tcon on success and then avoid any extra tree\nconnects.\n\n## Affected\n\n- `Linux >= c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e < 536ec71ba060a02fabe8e22cecb82fe7b3a8708b`\n- `Linux >= c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e < 553476df55a111e6a66ad9155256aec0ec1b7ad0`\n- `Linux >= c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e < ee20d7c6100752eaf2409d783f4f1449c29ea33d`\n- `Linux 81d583baa5f1abd73c755ce1992929debd20b687`\n- `Linux >= 5.15.81 < 5.16`\n- `Linux 5.16`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}